Atypical Thoracic: T12 Flashcards
What joint classifications are identified at the vertebral body of T12?
fibrous amphiarthrosis syndesmosis, cartilaginous amphiarthrosis symphysis and synovial plane diarthrosis arthrodia
How many joints are typically formed at the vertebral body of T12?
typically eight (ten if the costocentral stellate/radiate ligaments are included)
Which muscle(s) is attached to the vertebral body of T12?
psoas major and psoas minor
What does the lateral tubercle on T12 represent?
the transverse process
What does the superior tubercle on T12 represent?
the mammillary process of lumbar vertebrae
What does the inferior tubercle of T12 represent?
the accessory process of lumbar vertebrae
What ligaments form the costotransverse joint of the twelfth rib?
the superior costotransverse ligament from T11 and the lumbocostal ligament from L1
Which costotransverse ligament(s) lack an attachment to T12?
capsular costotransverse, superior costotransverse, inferior costotransverse and lateral costotransverse ligaments
what muscles attach to the transverse process region of T12?
the longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis and interttransversarii
Which segment is the last to demonstrate a levator costarum brevis attachement?
T11
Which segment is the last to demonstrate a levator costarum longus attachement?
T10
What is the orientation of the superior articular facets of T12?
They face backward, upward, and lateral BUL
What is the orientation of the inferior articular facets of T12?
they face forward, downward, and lateral FoLD
How many synovial joints are typically present at T12?
six
How many synovial joint surfaces for ribs are typically present on T12?
two
Which rib related facet(s) is absent on T12?
the inferior costal demi-facets and transverse costal facets
What muscles attach to the spinous process of T12?
the trapezius, latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, spinalis thoracis, multifidis, rotator longus, rotator brevis and interspinalis
which erector spinae muscle is unique in its attachment to the T12 spinous process?
iliocostalis lumborum
